* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

.container {
  background-image: url(./gamebg.jpg);
  background-repeat: no-repeat;
  background-position: center;
  background-size: cover;
  width: 450px;
  height: 450px;
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  display: grid;
  grid-template-columns: repeat(3, 150px);
  grid-template-rows: repeat(3, 150px);
}

.container > .item {
  width: 150px;
  aspect-ratio: 1/1;
  border: 1px solid;
  /* border-top: 75px solid #aaa;
  border-bottom: 75px solid #aaa;
  border-left: 75px solid #666;
  border-right: 75px solid #666; */
}

.item:nth-child(1) {
  background-color: red;
}
